Estudo da emissão por fluorescência de ultravioleta na quantificação de um inibidor de corrosão do tipo sal de amônio quaternário em água

Herllaine de Almeida Rangel, Fábio Merçon
2012 Química Nova  
Recebido em 22/2/11; aceito em 16/2/12; publicado na web em 30/4/12 STUDY OF ULTRAVIOLET FLUORESCENCE EMISSION IN THE QUANTIFICATION OF CORROSION INHIBITOR OF THE QUATERNARY AMMONIUM SALT TYPE IN WATER. Quaternary ammonium salts are the corrosion inhibitors most frequently used by the oil industry. In this study, the ultraviolet fluorescence technique was evaluated for the analysis of a quaternary ammonium salt in water as a corrosion inhibitor. The comparison with standard salt showed that an
more » ... alt showed that an alkyl aryl quaternary ammonium salt is the main fluorophore, with emission maxima at 306 and 593 nm. The best instrumental parameters were: width of excitation and emission slits of 10 and 15 nm, respectively, and scan rate of 10 nm min -1 . The presence of aromatic compounds and biocides affects the analysis of corrosion inhibitors.
doi:10.1590/s0100-40422012000700002 fatcat:ovdu3nbe6jh4ripcq5jwjlx7x4